Rapid Generation of Time-Optimal Trajectories for Asteroid Landing via Convex Optimization
Rapid Generation of Time-Optimal Trajectories for Asteroid Landing via Convex Optimization
复制标题
通过凸优化快速生成小行星着陆的时间最优轨迹
DOI:
10.2514/1.g002170
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发表时间:
2017-01
影响因子:
2.6
通讯作者:
Baoyin Hexi
中科院分区:
文献类型:
--
作者:
Yang Hongwei;Bai Xiaoli;Baoyin Hexi
This paper presents a new method for rapid generation of time-optimal trajectories for asteroid landing via convex optimization. To overcome the nonconvex difficulty due to the free-flight time, a minimum-landing-error problem that can be convexified is proposed to serve as a gateway for solving the time-optimal control problem. The proposed method solves the reduced minimum-landing-error problem via convex optimization first and then searches for the minimum flight time through a combination of extrapolation and bisection methods. The effectiveness of the proposed methodology for rapidly generating time-optimal trajectories is validated through simulations of spacecraft landing on two asteroids with both finite thrust and low thrust.
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发表时间:
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期刊:
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影响因子:
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通讯作者:
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